TY  - BOOK
AU  - Warrington ,A.R. Van C.
TI  - Protective Relays: their theory and practice
SN  - 412153807
U1  - 621.317 WAR 
PY  - 1977///
CY  - New York
PB  - John Wiley & Sons
KW  - Electronic Engineering
KW  - Technology
N1  - Includes Index
ER  -